5.8GHz 4-Line Corded/Cordless Panasonic 5.8GHz 4-line corded/cordless telephone system with digital answering system Includes one corded base and 1 cordless handset FHSS technology Expandable up to 8 total handsets (base unit is corded) Caller ID, call waiting caller ID Dual language LCD (English/Spanish) 50# Caller ID memory and dialer 100# Phonebookand dialer Light-up indicator with ringer alert Lighted handset keypad Selectable ring tones (3 tones, 4 melodies) Wireless network friendly 3-Line backlit LCD on handsets and base Keypad on base Base will work during power outage Intercom Chain dial 2.5mm Headset jack Belt clip included Hold/mute/pause/redial/flash Battery backup system Call transfer Message transfer 3-Way conferencing Permits up to 5 users at once (base unit and 4 handsets can be used simultaneously) Deliver transfer Auto message delete Flash/redial/pause/hold/mute Dual speakerphone (handset and base) Line 1, 2, 3, 4 buttons on base and on handset All digital answering system with 100 minutes of record time (this 100 minutes is also used for MOH storage) Auto attendant 8 Individual mailboxes Message transfer between handsets 2-Way recording Recordable music on hold (comes with pre-recorded music on hold and allows for audio playback while on hold with included stereo mini cable) Time/date stamp Remote access Voice prompts 1 Year manufacturer's warranty BlackREPLACEMENT BATTERY: HHR-P104ACCESSORY HANDSET: KX-TGA450BKXTG4500B